Plambda

[francescoagati]

this pull request add support for php 5.3 closure with this form:

(def x 100)
(def y 100)
(def sum (plambda (a b) (+ a b x y)))
(def sum3 (plambda (a b) (+ a b)))

a closure is callable in this form (like variable string that is referred to a function): ($sum 1 2)

bind of variables inside the closure is made from pharen scope so this form

(def x 100)
(def y 100)
(def sum (plambda (a b) (+ a b x y)))

is compiled in php

$__scope_id = Lexical::init_closure("plambda", 129);
$x = 100;
Lexical::bind_lexing("plambda", 129, '$x', $x);
$y = 100;
Lexical::bind_lexing("plambda", 129, '$y', $y);
$sum = function ($a, $b){
    $x = Lexical::get_lexical_binding('plambda', 129, '$x', isset($__closure_id)?$__closure_id:0);;
    $y = Lexical::get_lexical_binding('plambda', 129, '$y', isset($__closure_id)?$__closure_id:0);;
    return ($a + $b + $x + $y);
}

[francescoagati]

i close this pull request for now there is a bug in return plamba from another function